Bonus:fsymbols is a good resource for similar stuff, that you can do in chat/messages/status updates/comments etc. You know, stuff like – ‘Hey everyone, party ?(-???-?)? at my __??????? ??l??? ??l?*?? ?????? ???|?????? ???? ?????????? ???????? ?|?’.

Theory:

Facebook is not new to Easter Eggs [ The practice of including fun bits in the code, left for people to discover! ]. You might have received Merry Christmas graphics in your chat, like the ones in the above pic, or maybe not. But you certainly are going to send some of these out!

Actually, these are not emoticons at all, Facebook did not introduce any new emoticons, what they instead introduced is the ability to insert anybody profile pic in the chat. In addition to this, you can also insert a page’s profile pic.